P2603
Coolant Pump A Control Circuit High
2023-2024 Nissan Ariya Evolve+ Dual Motor AWD
Moderate SeverityPowertrainGeneric (SAE)
Description
High voltage on auxiliary coolant pump circuit.
Symptoms
- Check engine light
- Pump runs constantly
Common Causes
- Open ground
- Short to power
- Control module issue
Diagnostic Steps
- Check ground circuit
- Measure voltage
Repair Notes
Repair wiring or replace pump.
Related Codes
Other Powertrain Codes
- P0070Ambient Air Temperature Sensor Circuit
- P0071Ambient Air Temperature Sensor Range/Performance
- P0072Ambient Air Temperature Sensor Circuit Low
- P0073Ambient Air Temperature Sensor Circuit High
- P0115Engine Coolant Temperature (ECT) Sensor 1 Circuit
- P0116ECT Sensor 1 Circuit Range/Performance
- P0117ECT Sensor 1 Circuit Low Input
- P0118ECT Sensor 1 Circuit High Input
- P0119ECT Sensor 1 Circuit Intermittent
- P0125Insufficient Coolant Temperature for Closed Loop Fuel Control
P2603 on Other Vehicles
Nissan 200SX
1995-1998 1.6L I4 GA16DE
Nissan 200SX SE-R
1995-1998 2.0L I4 SR20DE
Nissan 240SX
1995-1998 2.4L I4 KA24DE
Nissan 300ZX
1990-1996 3.0L V6 VG30DE
Nissan 300ZX Twin Turbo
1990-1996 3.0L Twin-Turbo V6 VG30DETT
Nissan 350Z
2003-2006 3.5L V6 VQ35DE
Nissan 350Z
2007-2009 3.5L V6 VQ35HR
Nissan 370Z
2009-2020 3.7L V6 VQ37VHR
Common Questions
What does code P2603 mean on a 2023-2024 Nissan Ariya?
P2603 stands for "Coolant Pump A Control Circuit High". High voltage on auxiliary coolant pump circuit.
What are the symptoms of P2603 on a Nissan Ariya?
Common symptoms of P2603 include: Check engine light, Pump runs constantly.
What causes P2603 on a 2023-2024 Nissan Ariya?
Common causes of P2603 include: Open ground, Short to power, Control module issue.